Questions about Ad-aware

In the steps to clean my comp, I first manually delete and move files where I want them, put them in the right folder and what not. Then I run ad-aware, and most of the files that show up are tracking files, I delete those, then i run ashampoo winoptimizer suite, which gets rid of LOTS of files. Recently i've been having a lot of problems with mainly my internet browser. I would get a bunch of script error pop ups and the internet was just slow. In winoptimizer i was able to restore the windows defaults and my internet is working better now... i still get the occasional script error pop up. Then after I run winoptimizer I defragment my hard drive, uninstall unneccesary programs, then restart my comp. I do this every week